DriveSpace/Win98SE: disabling compatibility mode?

[Harry Potter]

How do I disable the DoubleSpace compatibility mode under Win98SE? I need the extra RAM in DOS mode.

[JJ]

Post by Harry Potter
How do I disable the DoubleSpace compatibility mode under Win98SE? I need
the extra RAM in DOS mode.

DriveSpace doesn't have a compatibility mode. It's Windows that has it. One
reason why Windows would fall back to compatibility mode for disk access is
due to incompatibility with a third party DOS device driver or TSR.

[Harry Potter]

Post by JJ
DriveSpace doesn't have a compatibility mode. It's Windows that has it. One
reason why Windows would fall back to compatibility mode for disk access is
due to incompatibility with a third party DOS device driver or TSR.

Oh. I thought that the DBLSPACE driver in DOS was compatibility mode. :( Is there a way to disable DriveSpace's DOS driver in a special DOS-mode .PIF setup? I vaguely recall seeing such an option in the text files included with Windows a long time ago.

[JJ]

Post by Harry Potter
Is there a way to disable DriveSpace's DOS driver in a special DOS-mode
.PIF setup?

No. But you can disable DriveSpace when in DOS mode / pure DOS, but still be
able to access DriveSpace compressed drives from Windows and
DOS-under-Windows. i.e. use Windows' DriveSpace driver alone, without the
DOS version of the DriveSpace driver. This means that no DOS program will be
able to see DriveSpace compressed drives unless they're running under
Windows' DOS (box).

Post by Harry Potter
I vaguely recall seeing such an option in the text files
included with Windows a long time ago.

I vaguely recall that it's not possible from CONFIG.SYS or AUTOEXEC.BAT.

[Harry Potter]

Post by JJ
No. But you can disable DriveSpace when in DOS mode / pure DOS, but still be
able to access DriveSpace compressed drives from Windows and
DOS-under-Windows. i.e. use Windows' DriveSpace driver alone, without the
DOS version of the DriveSpace driver. This means that no DOS program will be
able to see DriveSpace compressed drives unless they're running under
Windows' DOS (box).

I'll look into msdos.sys then. Thanks! :)

I really don't use DOS mode and DriveSpace drives at once, so this might be good. :)

Post by JJ

Post by Harry Potter
I vaguely recall seeing such an option in the text files
included with Windows a long time ago.

I vaguely recall that it's not possible from CONFIG.SYS or AUTOEXEC.BAT.

Oh.

[JJ]

Post by Harry Potter

Post by JJ
No. But you can disable DriveSpace when in DOS mode / pure DOS, but still be
able to access DriveSpace compressed drives from Windows and
DOS-under-Windows. i.e. use Windows' DriveSpace driver alone, without the
DOS version of the DriveSpace driver. This means that no DOS program will be
able to see DriveSpace compressed drives unless they're running under
Windows' DOS (box).

I'll look into msdos.sys then. Thanks! :)
I really don't use DOS mode and DriveSpace drives at once, so this might be good. :)

I forgot to mention that with that method, the DriveSpace compressed files
(e.g. DRVSPACE.001) must be manually mounted using undocumented command line
switch. e.g. to mount:

drvspace /mount d:\drvspace.001

I haven't found a way to specify the driver leter to use.

To unmount:

drvspace /unmount h:

Both of the above command will show a message box for reporting the result.
I found a reference to a possible /NOPROMPT switch which I think it'll omit
that message box (I haven't tested it yet).

[Harry Potter]

Post by JJ
I forgot to mention that with that method, the DriveSpace compressed files
(e.g. DRVSPACE.001) must be manually mounted using undocumented command line
drvspace /mount d:\drvspace.001
I haven't found a way to specify the driver leter to use.

I didn't know that. Will this load the drivers into memory?

[Harry Potter]

I tried that. The program requires Microsoft Windows. :( I can use Stacker for the job, though. BTW, how do I get Stacker 4.1 to auto-mount compressed volumes?

[JJ]

Post by Harry Potter
I tried that. The program requires Microsoft Windows. :(

I already told you that.

Post by Harry Potter
I can use Stacker for the job, though. BTW, how do I get Stacker 4.1 to
auto-mount compressed volumes?

It's in its help file.

[JJ]

Post by Harry Potter

Post by JJ
I forgot to mention that with that method, the DriveSpace compressed files
(e.g. DRVSPACE.001) must be manually mounted using undocumented command line
drvspace /mount d:\drvspace.001
I haven't found a way to specify the driver leter to use.

I didn't know that. Will this load the drivers into memory?

Yes, but only for the Windows version of the driver (which also support DOS
environment; i.e. DOS box).